I currently use vim every day. I have been trying to learn vim off and on for about 30 years. vi and vim have modes because they were created in an era where computing and terminal capabilities were very limited and even when the terminals could support interactive editing, it wasn't expected. They had very low expectations. They were used to things like 'ed'. The religious beliefs that programmers have about vim are…
that's the whole point. it was designed for limited terminals and high latency, very slow serial links. that means when you learn it and all of its shortcuts and you have a fast and modern terminal, you are able to edit at ludicrous speed.
it's like training at altitude or running with weight belts for editing text.